4.8Ghz at 1.4v what settings?

[borisvodofsky]

also, I noticed that you're using the NH C14, are u using push pull? the last time I used this cooler, it worked better when I only had one fan on top pushing downwards,

the exhaust fans closest to your cpu are also very important as with this cooler, it blows hot air directly towards your board.

 

[0dervish0]

USE occt to track your voltage.

and post a print screen after 4 mins of prime small ftt. make sure occt is running. :biggrin:

http://www.ocbase.com/index.php/download

Ok I did that with the above settings I specified and this is what I got:

vcore 1.27v at 4.8ghz?

 

[0dervish0]

I don't know if I reading it wrong but at the moment with little load its at 1.33v???

 

[borisvodofsky]

I don't know if I reading it wrong but at the moment with little load its at 1.33v???

Yup that is correct, my cpu does the same thing.

I'm guessing its because during small ftt the memory controllers are not engaged, and so it doesn't use as much voltage as when normal tasks require the memory controllers. "this is a guess"


I don't know if you'll be stable at your current voltage though for 4.8,

If you are, then god bless.

but you can see how the bios voltage is NOT indicative of actual core voltage, which is why you have to check IN OS while running your test programs

You can safely up your voltage in the BIOS until the it hits 1.336 or 1.34 during Small ftt prime.

This should translate to around 1.35 to 1.36 during IBT, when the processor asks for even more power because of AVX.

 

[0dervish0]

So why is my vcore in bios 1.37v and in occt its 1.27v? Does the 1.37v just mean the max voltage it will use? So should I just keep on bumping it up till I'm stable?

My mate said to turn speedstep off as it will run more stable, do you agree?

Thanks

 

[borisvodofsky]

also, are you using offset mode in your bios, or manual voltage mode... because manual mode for me gives higher peak voltage all around, while offset mode, gives a better range.

 

[borisvodofsky]

So why is my vcore in bios 1.37v and in occt its 1.27v? Does the 1.37v just mean the max voltage it will use? So should I just keep on bumping it up till I'm stable?

My mate said to turn speedstep off as it will run more stable, do you agree?

Thanks

no, you should keep speed step on, because it doesn't hinder overclocking on the sandybridge platform ^_^, it used to be a problem with older chips nehelem etc.

 

[0dervish0]

also, I noticed that you're using the NH C14, are u using push pull? the last time I used this cooler, it worked better when I only had one fan on top pushing downwards,

the exhaust fans closest to your cpu are also very important as with this cooler, it blows hot air directly towards your board.

Yes I do have the NH C14 but I'm not sure how I have it configured. I just installed it as it was. At the moment my case fans aren't working for some reason. When I plug them directly to the mobo it works so I think its the 650d fan controller that is broken.

 

[borisvodofsky]

The bios setting is best guess while the measurement IN OCCT is the real time core voltage..

 

[borisvodofsky]

Yes, you can keep bumping voltage in BIOS until you hit 1.35 in the OCCT measurement.

 

[borisvodofsky]

you also need to check IBT temperatures and voltages, because under IBT, the processor will once again behave differently.

 

[borisvodofsky]

Hmmm.. ok let me give you an example

Under IBT, the processor asks for a fairly high amount of voltage, say 1.35v, and it will be stable..

Now this same bios voltage setting, under Prime 95 small ftt, the processor may only ask for 1.288v. This will be below the voltage threshold for stability.


So you only have one choice, to increase the voltages even though you're stable in IBT, but NOT in Prime 95..

So the range can be high enough for IBT, but Too low for prime 95, because the processor is too !@#$ dumb..


The inverted situation could happen, where your peak voltage isn't high enough for IBT, but is enough for Prime 95, but this doesn't occur as often.

 

[0dervish0]

I think I switched off offset mode and have it at fixed vcore.

Yeah currently I have the case open as my case fans don't work. IBT temps as you can see on the axtu are 32 degrees. Just to make sure IBT is the same as mobo temps?

I really appreciate all your advice.

 

[borisvodofsky]

I think I switched off offset mode and have it at fixed vcore.

Yeah currently I have the case open as my case fans don't work. IBT temps as you can see on the axtu are 32 degrees. Just to make sure IBT is the same as mobo temps?

I really appreciate all your advice.

You don't have to worry about temperatures right now because you're not playing with fire until you do 1.5v

everything below that won't insta-kill your processor. :biggrin:

What I'm trying to impart is, relax.. ^_^

My stability range is

Prime 95 will ask for 1.328-1.336v
IBT will ask for 1.328-1.36v


I know for a fact that I don't need 1.36 to stabilize for IBT,

However, My computer will crash because during light loads, the bottom voltage that my CPU asks for is too low.

For example, I could use 1.336 volts as my peak voltage for IBT, and it could do 20 runs, at low heat no problem.

However, this setting will crash prime 95, because the voltages the cpu asks for during prime is too LOW.

 

[0dervish0]

You don't have to worry about temperatures right now because you're not playing with fire until you do 1.5v

everything below that won't insta-kill your processor. :biggrin:

What I'm trying to impart is, relax.. ^_^

haha good advice. I will try to but I don't want to kill my system.

Thank you!

 

[0dervish0]

Oh I get you now haha. Your talking about internal burn test.

 

[borisvodofsky]

Oh I get you now haha. Your talking about internal burn test.

intel burn test.

It gives you maximum heat.

 

[0dervish0]

So pretty much I just need to continue increasing my vcore till I can run prime95 overnight without a BSOD and check my temps and vcore in occt?

Still not sure about switching off thermal throttling haha.

Cheers

 

[borisvodofsky]

So pretty much I just need to continue increasing my vcore till I can run prime95 overnight without a BSOD and check my temps and vcore in occt?

Still not sure about switching off thermal throttling haha.

Cheers

well if after 10 minutes of prime, you get 70C, it's unlikely that it's going to go any higher unless your fan fails.. ^_^

Although, if you're really that worried, put a box fan in front of your computer just in case.

 

[borisvodofsky]

Yea keep uping that voltage. And try to enable extreme phase setting if your mobo has it.. those other guys are pussies, you can baby your computer, but it's gonna be a turtle in 3 years anyway.

We already know that sandy can go at least 2 years at 1.5v

 

[borisvodofsky]

My Dram actually runs at 9-9-9-24 1T, turns out with 2 sticks you can tighten up quite a bit.

 

[0dervish0]

Nice

Yeah my ram is rated for 9-9-9-24 but for some reason in the bios it runs at a slower timing

 

[borisvodofsky]

Nice

Yeah my ram is rated for 9-9-9-24 but for some reason in the bios it runs at a slower timing

You have to either manual set it to 99924, or enable the xmp dram profile. ^_^

 

[0dervish0]

Yeah I had it manually set perform but then I ran into ram instability problems so I put it back to normal. It would fail memtest.

 

[borisvodofsky]

Yeah I had it manually set perform but then I ran into ram instability problems so I put it back to normal. It would fail memtest.

did you make sure to use 99924 (2T) for command rate? because you're using 4 sticks.

^ this setting may be labeled dram command rate, or dram command "mode"

Also you can increase VCCIO to 1.1-1.15, try to stay under 1.2, this should help memory stability when using so many sticks